Difference between GFI GFCI and AFCI

March 15, 2015 50 Comments

GFCI = ground fault circuit interrupter
GFI = ground fault interrupter (same as above)
AFCI = arc fault circuit interrupter

Both basically keep you and your home safe from the dangers of electricity.

gfciGround Fault Circuit Interrupters help prevent burns, electric shocks and electrocution.  A GFCI has sensors that measure the current going out and the current coming back in. Normally, the current is balanced as it goes out and comes back in. However, if the current is out of balance, something is wrong. The electric current has made contact with a human, water, or somewhere else it should not be. The GFCI senses this and instantly shuts down the circuit, stopping the flow of electricity. Since water is an excellent electric conductor, GFCIs are important in areas where water and electricity could meet, such as bathrooms, kitchens, laundry rooms, garages, and the exterior of the home.

afci

Arc Fault Circuit Interrupters help prevent electric fires. Electricity can leak out of damaged or decaying wires and start a fire. These fires spread quickly in the wiring behind walls. Electric fires cause more damage than other types of fire, and are twice as deadly. AFCIs sense that electricity is leaking from the electric system and shut electricity off before overheating happens.

Basically, GFCI’s prevent shocks, and AFCI’s prevent fires.

50 thoughts on “Difference between GFI GFCI and AFCI”

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